GHRP-2 (pralmorelin) is the budget tier of growth-hormone-releasing peptides. The published clinical data documents robust GH response and food-intake elevation in healthy men (Laferrère et al. 2005) and pralmorelin acetate has historical use as a Japanese diagnostic agent for GH deficiency.
Research-context information only. GHRP-2 is a research peptide on the FDA 503A bulks Category 2 list. Protocols, doses, and reactions reported below come from published research and self-reported community sources. This article reports what has been documented, not what should be done. Consult a licensed physician for personal medical decisions.
The buying problem is that GHRP-2 is structurally similar to ipamorelin and GHRP-6 — vendors sometimes mislabel between the three. Mass spec at 817.41 Da is the verification target.
This guide covers documented per-mg pricing, COA verification, vial size selection, and red flags. For dosing context, see the GHRP-2 dosing guide.
This is not a ranked vendor list — for that, see our Best GHRP-2 Vendors comparison.
Understanding GHRP-2 Pricing
Current Market Pricing (2026)
Vial Size
Typical Price Range
Price Per mg
Best For
2mg
$10-25
$5-12.50/mg
Tolerance testing only
5mg
$20-45
$4-9/mg
Standard short cycles
10mg
$30-70
$3-7/mg
Standard 100-300mcg×3/day — best all-around
10mg × 5 (kit)
$130-300
$2.60-6/mg
Extended cycles
Cost Per Month at Common Doses
Daily Dose
Monthly Mass
Monthly Cost (10mg single)
100mcg/day
3mg
$9-21
100mcg×3/day
9mg
$27-63
200mcg×3/day
18mg
$54-126
For current vendor-specific pricing, see our Best GHRP-2 Vendors comparison.
Cheapest single-vial option: Ion Peptide's 15% off drops the 5mg vial to $24.65 ($4.93/mg effective) — the lowest effective price we track for buying one vial. Get the code →
How to Verify GHRP-2 Quality
GHRP-2 is a 6-residue peptide with two D-amino acids and a 2-naphthyl substitution. Verification focuses on mass spec at 817.41 Da and ensuring the D-amino acids haven't racemized.
5mg · sold research-use-only · we may earn a commission
Choosing the Right Vial Size
The 28-Day Stability Rule
GHRP-2 reconstituted with bacteriostatic water and refrigerated is documented stable for roughly 28 days. With sterile water (no preservative), the window collapses to ~24 hours.
Practical implication: A 5mg vial at 100mcg×3/day fits the window. Higher doses or larger vials require staged reconstitution.
Vial Size by Protocol
Tolerance testing:
A 2mg or 5mg vial is the smallest unit cited
Standard 100mcg×3/day pulse-mimetic protocol:
5mg vial — 17 days, fits the stability window
10mg vial with staged reconstitution for larger users
Why GHRP-2 Costs Less Than Ipamorelin
GHRP-2 runs $3-7/mg vs $4-8/mg for ipamorelin — small but consistent gap. Reasons:
1. Simpler synthesis. Both peptides have D-amino acids, but ipamorelin has the more expensive Aib (alpha-aminoisobutyric acid) residue.
2. Less receptor selectivity = lower commercial value. GHRP-2 elevates cortisol and prolactin at higher doses; ipamorelin doesn't. Buyers who care about that selectivity pay the premium for ipamorelin.
For users where cortisol/prolactin elevation is acceptable (e.g., bulking-phase protocols), GHRP-2 is the budget option.
Vendor Evaluation Methodology
Price Competitiveness (40%)
Normalize to cost per milligram.
COA & Testing (30%)
Third-party labs (Janoshik, MZ Biolabs, Colmaric)
Recent (within 6 months)
Mass spec confirming 817.41 Da
Reputation (30%)
Community feedback, shipping reliability, customer service.
Shipping and Storage
Storage Guidelines
State
Temperature
Duration
Lyophilized
Refrigerated (2-8°C)
12+ months
Lyophilized
Frozen (-20°C)
24+ months
Reconstituted (BAC water)
Refrigerated
~28 days
Reconstituted (sterile water)
Refrigerated
~24 hours
Where to Buy
1
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Frequently Asked Questions
Is GHRP-2 legal to buy?
GHRP-2 (pralmorelin) is sold as a research peptide labeled 'not for human consumption.' It is not FDA-approved in the US. Pralmorelin acetate has been used as a diagnostic agent for growth hormone deficiency in Japan. Purchasing research peptides is legal in most US jurisdictions.
How much does GHRP-2 cost per month?
Community subcutaneous protocols use 100-300mcg three times daily. Monthly mass at 100mcg×3/day is 9mg. Research-vendor 5mg vials run $20-45 and 10mg vials run $30-70. Monthly cost ranges from $30-90.
What's the difference between GHRP-2 and ipamorelin?
Both are ghrelin receptor agonists. GHRP-2 (817.41 Da hexapeptide) is cheaper per mg ($2-7/mg) but less selective — it elevates cortisol and prolactin at GH-active doses. Ipamorelin ($4-8/mg) is more selective for GH release. The trade-off is cost vs side-effect profile.
What vial size should I buy?
5mg and 10mg vials are the most-cited sizes. 10mg fits most monthly protocols within the 28-day reconstitution window.
What purity should I look for in GHRP-2?
Third-party HPLC at 98%+ purity, plus mass spec confirming 817.41 Da. GHRP-2 is a 6-residue peptide (D-Ala-D-2-Nal-Ala-Trp-D-Phe-Lys-NH2) with two D-amino acids — synthesis is straightforward but D-residue racemization is a synthesis quality marker.
Can I buy GHRP-2 from a compounding pharmacy?
Not in the US. GHRP-2 is on the FDA 503A bulks Category 2 list as of 2023. Research vendors are the only documented commercial source for US buyers.
This article is for educational and informational purposes only. It is not medical advice and should not be used to diagnose, treat, or prevent any condition. Consult a licensed healthcare provider before using any peptide.
